MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by an ML classifier as malicious. Heuristics indicate it functions as a link farm, with multiple URLs pointing to compromised WordPress sites. These links are likely designed to redirect users to malicious content or phishing sites, a common tactic for initial access via spearphishing attachments.
Machine Learning
- Nyx PDF Classifier malicious score 0.9926
Heuristics 5
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac0ce7a9ebb---xiferixivapuwodimevufev.pdf
- http://riasztoszolnok.hu/admin/fck_upload/file/77342729780.pdf
- https://12shio1.com/contents/files/66719374198.pdf
- http://bajajsports.com/userfiles/file/vemubig.pdf
- http://esoftland.com/userfiles/file/forogefatiba.pdf
- http://bernendorf.ru/userfiles/file/5340086681.pdf
- https://sonntag-immobilien.lu/userfiles/files/fumigibimavunil.pdf
- https://taevlingar.se/images/pages/file/mivizoxosor.pdf
- http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607608102b757---34752476977.pdf
- http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160896f975e981---fidekofuke.pdf
- https://upbilbao.com/ckfinder/userfiles/files/17845777870.pdf
- https://wegofa.com/userfiles/file/65883400863.pdf
- https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/rqbr9p2307n2934kojmvnhmqv5/lubazefibop.pdf
- http://escuelasfutbol8.com/docs/files/vedawilipimewa.pdf
- http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607b043f3fcb9---11437754247.pdf
- http://recit-de-vie.fr/userfiles/file/pagiduvoniratadikif.pdf
- http://donghotam.com/luutru/files/zemotasajavumitamivegixe.pdf
- https://wagaskar.com/media/97320474732.pdf
- https://cakkue.com/contents/files/lebafufilolep.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086ca017086d---jotimogokujovepodado.pdf
- http://klasykarozrywki.pl/public/images/fck/file/funekaxiwapesoregeleluz.pdf
- https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/cb625c4f0413fdfd71b53393b55f8c00/tivukodibaragewijetipiz.pdf
- https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7b2744139---labobopagabofagoj.pdf
- http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099b2ca64a22---90090836037.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=clauses+and+phrases+showing+contrast+and+exception+pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f834.bindfb3ab8ceff9d1d88bbd701634bbb80f9c8cfec21a3d37c6200271b45bca0ee3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF834 | 17388 bytes |
font_01_sfnt_off00011289.bin743f8ec27a9167b122dc98e90d9407cf5717caa86180ec46f8d61e1b170e2135 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11289 | 18888 bytes |
font_02_sfnt_off00014385.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14385 | 16792 bytes |
font_03_sfnt_off00015b9c.bin0c39485e7ae769d751c2da69635cc77963dbb4403eefbc3fc577ef49095af006 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15B9C | 11216 bytes |
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